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York Space Systems Inc. (New York Stock Exchange:YSS)
US · Delayed Price · Currency is USD
Industrials · Aerospace & Defense
6.33+0.02 (+0.32%)
Market cap
$869M
Health Score
Analyst consensus
Listed since
Jan 29, 2026
Website
Insider Score
––Not scored
YSS Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
YSS Stock Insider Trading Activity
YSS stock’s insider trading shows 14 sales on the open market for an estimated $28.64M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| BlackRock Portfolio Management LLC Other | Sell | 200,170 | $10.99 | $2.20M | 1.2% | 16,517,115 | Aug 7, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 201,504 | $11.60 | $2.34M | 1.2% | 16,717,285 | Aug 6, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 116,162 | $13.49 | $1.57M | 0.7% | 16,930,673 | Aug 5, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 11,884 | $15.28 | $181.59K | 0.1% | 16,918,789 | Aug 5, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 116,162 | $13.49 | $1.57M | 0.7% | 16,943,178 | Aug 5, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 11,784 | $15.28 | $180.06K | 0.1% | 16,931,394 | Aug 5, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 78,082 | $15.02 | $1.17M | 0.4% | 17,515,311 | Aug 4, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 468,476 | $15.58 | $7.30M | 2.7% | 17,046,835 | Aug 4, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 77,743 | $15.02 | $1.17M | 0.4% | 17,515,650 | Aug 4, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 456,310 | $15.58 | $7.11M | 2.6% | 17,059,340 | Aug 4, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 13,754 | $15.03 | $206.72K | 0.1% | 17,593,393 | Aug 3, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 35,574 | $15.14 | $538.59K | 0.2% | 17,607,147 | Jul 31, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 140,823 | $15.18 | $2.14M | 0.8% | 17,642,721 | Jul 30, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Sell | 63,390 | $15.31 | $970.50K | 0.4% | 17,783,544 | Jul 29, 2026 | — | Form 4 |
| AEROEQUITY GP, LLC Other | Award | 2,289,366 | $34.00 | $77.84M | 7.5% | 32,915,588 | Jul 8, 2026 | — | Form 4 |
| AEROEQUITY GP, LLC Other | Award | 287,789 | $34.00 | $9.78M | 1.0% | 30,483,877 | Jun 4, 2026 | — | Form 4 |
| Davidson Janine Director | Award | 4,381 | — | — | New | 4,381 | Apr 10, 2026 | — | Form 4 |
| Rudra Devjyoti Other | Award | 23,529 | — | — | 7.0% | 358,357 | Jan 30, 2026 | — | Form 4 |
| Wallinger Dirk CEO | Award | 569,920 | — | — | 6.0% | 10,141,966 | Jan 30, 2026 | — | Form 4 |
| McConville James Director | Award | 5,294 | — | — | New | 5,294 | Jan 30, 2026 | — | Form 4 |
| Erwin Tami A. Director | Buy | 2,941 | $34.00 | $99.99K | 3.8% | 79,984 | Jan 30, 2026 | CFirst BuyDilution | Form 4 |
| Erwin Tami A. Director | Award | 5,294 | — | — | 7.4% | 77,043 | Jan 30, 2026 | — | Form 4 |
| Messerle Kevin CFO | Award | 80,882 | — | — | New | 80,882 | Jan 30, 2026 | — | Form 4 |
| Letarte Tyler Director | Buy | 1,470 | $34.00 | $49.98K | New | 1,470 | Jan 30, 2026 | BFirst BuyDilution | Form 4 |
| Letarte Tyler Director | Award | 5,294 | — | — | New | 5,294 | Jan 30, 2026 | — | Form 4 |
| Frantz Brian D Other | Award | 10,294 | — | — | 180% | 16,000 | Jan 30, 2026 | — | Form 4 |
| Konert Kirk Michael Director | Award | 5,294 | — | — | New | 5,294 | Jan 30, 2026 | — | Form 4 |
| Brothers Louis R Jr Director | Award | 5,294 | — | — | New | 5,294 | Jan 30, 2026 | — | Form 4 |
| Boyd Andrew Director | Award | 5,294 | — | — | New | 5,294 | Jan 30, 2026 | — | Form 4 |
| BlackRock Portfolio Management LLC Other | Buy | 752,500 | $34.00 | $25.59M | 4.4% | 17,846,934 | Jan 30, 2026 | — | Form 4 |
| Palko Monica J. Other | Award | 54,412 | — | — | New | 54,412 | Jan 30, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Buy (P) — Open-market or private purchase
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.